Push-button nozzle for e.g. nasal sprayer, has needle valve closing spraying orifice, and barrel comprising lower end with ring connected to ejection tube and delimiting return chamber closed by snap ring carried by base of valve

摘要

#CMT# #/CMT# A nozzle has a needle valve closing a spraying orifice provided at the end of the nozzle. A core (3) comprises a product conveying channel (30) leading to a turbulence chamber (54). A barrel (4) has a lower end comprising a connecting ring (41) connected to an ejection tube (E) of a product delivering unit (P) of a pharmaceutical or a cosmetic product dispenser. The barrel delimits a return chamber (20) closed by a peripheral sealing snap ring carried by a base (13) of the valve. #CMT#USE : #/CMT# Used in a pharmaceutical or a cosmetic product dispenser (claimed) e.g. nasal sprayer. #CMT#ADVANTAGE : #/CMT# The sealing snap ring permits to hermetically close the return chamber and the needle valve permits to tightly close the spraying orifice provided at the end of the nozzle. The nozzle hence provides a reinforced sealing in order to guarantee the physico-chemical properties as well as the sanitary quality of the product irrespective of the volume of the container bottle of a dispenser and the delivered doses. The needle valve is compact and ensures a very fine and intense dispensing of the product. The nozzle permits to guarantee the stability of supply parameters such as speed and pressure of the nozzle, thus providing regularity and homogeneity of the spraying. The nozzle can be connected to the product delivering unit of a dispenser in a simple and stable manner, thus ensuring an easy manipulation and permitting to conserve an axial alignment of the nozzle on the dispenser. A reliable and precise dosing of the product is hence obtained. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a push-button nozzle mounted on a pump assembled to a container bottle of a pharmaceutical or a cosmetic product dispenser. E : Ejection tube P : Product delivering unit 3 : Core 4 : Barrel 13 : Base 20 : Return chamber 30 : Product conveying channel 41 : Connecting ring 54 : Turbulence chamber.